Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d09b41c7ca6bcc5…

MALICIOUS

PDF

43.1 KB Created: 2020-08-19 17:55:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 072b4ea06fd0e276513eb4ddad6f19d6 SHA-1: 2c983f815732dc03d3110f94d86323043e43e511 SHA-256: 2d09b41c7ca6bcc503af28c7eb08de21ffa8210fcdf0225185a2d0d5aa1fe3b3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting seemingly benign PDFs. However, one critical link redirects to a known malicious domain, ttraff.ru, which is likely part of a phishing or malware distribution scheme. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be a link farm designed to obscure malicious redirects.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=honey+mustard+chicken+thigh+sheet+pan+dinner
    • http://files.yayacanada.ca/uploads/1/3/0/7/130740536/d7fd52d8b1f9.pdf
    • http://files.nbouliane.org/uploads/1/3/1/3/131379894/rukogog.pdf
    • http://files.vancourtcustomcabinetry.com/uploads/1/3/1/4/131407547/vejij-fugob-mevurinapijitu-wogalawa.pdf
    • http://gejaso.danyaleducation.com/uploads/1/3/1/4/131453133/4d7cd33a551.pdf
    • http://files.ekneinfo.com/uploads/1/3/0/8/130874162/2707214.pdf
    • https://cdn.shopify.com/s/files/1/0451/3798/5690/files/strategic_management_decision_making_process.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/4964895776.pdf
    • https://cdn.shopify.com/s/files/1/0437/9571/0113/files/10288147464.pdf
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/89780479270.pdf
    • https://cdn.shopify.com/s/files/1/0429/0510/8636/files/fuzzy_engineering_expert_systems_with_neural_network_applications.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5781/files/cardan_joint.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/9057473616.pdf
    • https://cdn.shopify.com/s/files/1/0438/3096/8480/files/que_es_acalasia.pdf
    • https://cdn.shopify.com/s/files/1/0434/2182/7222/files/see_candy_sugar_free_nutritional_information.pdf
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/gevujedibe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a83.bin
4e7e6414c90c7e9180f0974697f1ba4dbcc63dc495cb22c259da44e2ef0d6087		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A83 5580 bytes
font_01_sfnt_off00007d54.bin
3f295f5acaf9af2e270f2d2b68af578a6bf8945316c47f433ef46325f180a0a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D54 10028 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.